164726840

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{67511}}^1$

素因数の和:67583

約数の個数: 32

約数和(自身を含む): 376716960

約数和(自身を除く): 211990120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 67511, 135022, 270044, 337555, 540088, 675110, 1350220, 2700440, 4118171, 8236342, 16472684, 20590855, 32945368, 41181710, 82363420, 164726840]

約数ペア:

[(1, 164726840), (2, 82363420), (4, 41181710), (5, 32945368), (8, 20590855), (10, 16472684), (20, 8236342), (40, 4118171), (61, 2700440), (122, 1350220), (244, 675110), (305, 540088), (488, 337555), (610, 270044), (1220, 135022), (2440, 67511)]